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+--- Thread: Minnesota And Wisconsin Propose Bubbles To Stop Invasive Carp (/showthread.php?tid=119384)
Minnesota And Wisconsin Propose Bubbles To Stop Invasive Carp - tubeN2 - 03-29-2004
[font "Arial, Helvetica, sans-serif"][#000000][size 2]ST. PAUL, MN—A new study says an underwater barrier of bubbles and sound waves might perform better than an electric barrier for stopping bighead carp from migrating up the Mississippi River. [/size][/#000000][/font]
[font "Arial, Helvetica, sans-serif"][#000000][size 2]The fence, called a bubble curtain, would divert carp to a holding area where they could be mechanically removed from the river. [/size][/#000000][/font]
[font "Arial, Helvetica, sans-serif"][#000000][size 2]The report rejected an electrical barrier similar to the one near Chicago, citing high construction costs, monthly operating costs and safety concerns. A report by a different company last October suggested an electric barrier across the Mississippi would cost $15 to $25 million. [/size][/#000000][/font]
[font "Arial, Helvetica, sans-serif"][#000000][size 2]The $65,000 study was commissioned by Minnesota, Wisconsin and the U.S. Fish & Wildlife Service after a fisherman caught a bighead in Lake Pepin last fall. [/size][/#000000][/font]
[font "Arial, Helvetica, sans-serif"][#000000][size 2]The underwater sound and bubble barrier would be strung across the river and would use speakers and an air hose. Officials are considering five locations: from Lock and Dam No. 8 south of La Crescent, Minnesota, to four sites at locks and dams in Iowa. [/size][/#000000][/font]
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Re: [tubeN2] Minnesota And Wisconsin Propose Bubbles To Stop Invasive Carp - DrownedDesertRat - 03-30-2004
I'd love to see the results of this study. How does it affect the other fish? What kinds of soundwaves are they using? The fish in my aquarium love the bubbles!
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